### Bug summary Minuses are shown as dashes when choosing the log scale, both in the exponent and in front of the actual number. ### Code for reproduction ```python plot([-10, 10], [-10, 10]) yscale('symlog', linthresh=.1) ``` ### Actual outcome  ### Expected outcome Minuses should be shown as minuses and not dashes. ### Operating system OS/X ### Matplotlib Version 3.4.3 ### Matplotlib Backend module://matplotlib_inline.backend_inline ### Python version 3.8.1 ### Jupyter version 3.2.1 ### Other libraries _No response_ ### Installation conda ### Conda channel _No response_